C5ALIVE Forum

C5Alive General Category => C5 Chatroom => Topic started by: Karl on 11, February, 2010 - 16:43:31

Title: Dragon Technology gearbox conversion
Post by: Karl on 11, February, 2010 - 16:43:31
For those that didn't make in to "C5-25", there was a working protoype of electricDave's metal gearbox conversion on display;

(http://i74.photobucket.com/albums/i257/1stbooboo/c5-25021.jpg)

(http://i74.photobucket.com/albums/i257/1stbooboo/c5-25023.jpg)

(http://i74.photobucket.com/albums/i257/1stbooboo/c5-25024.jpg)

The first prototype was displayed at Brooklands and will stay in its display case for a while longer yet .

Yesterday I collected the second one and will be fitting it to Voodoo next week in preparation for some serious testing over this years meetings etc  8).

We want to make sure it is properly sorted and reliable before making it available to everyone else... but we are getting closer to making a usable "maxxed out" 24v c5 a reality. :)



   
Title: Re: Dragon Technology gearbox conversion
Post by: Retro Andy on 11, February, 2010 - 19:46:24
Nice !

Retro Andy
Title: Re: Dragon Technology gearbox conversion
Post by: Umpa on 11, February, 2010 - 21:23:53
I want one :)
Title: Re: Dragon Technology gearbox conversion
Post by: radiomarty on 11, February, 2010 - 23:16:23
And me !!!!!!!!!! ::)
Title: Re: Dragon Technology gearbox conversion
Post by: Retro Andy on 12, February, 2010 - 06:22:20
We three are men of many words  :D

Retro Andy
Title: Re: Dragon Technology gearbox conversion
Post by: Umpa on 12, February, 2010 - 06:45:43
Lol
Title: Re: Dragon Technology gearbox conversion
Post by: radiomarty on 12, February, 2010 - 09:18:41
Yep
Title: Re: Dragon Technology gearbox conversion
Post by: techytype on 12, February, 2010 - 11:47:13
me too,

Q) now i have 2 x C5's - any discount for quantity? :D

 ;D


just a 'under development' thought here, the original large dog on the axle is nylon, these will have been fatigued with age, not sure how available they are so is it worth using/offering a chain drive conversion inplace of the belt?
 
regs
alan
Title: Re: Dragon Technology gearbox conversion
Post by: c515mph on 12, February, 2010 - 12:32:56
This may be a good point to think about,as one of my drive cogs did crack?
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 12, February, 2010 - 13:45:23
Some more detail on the project, although we're not going to release all the exact details of this conversion since we're the ones who have paid for the "research and development" side and don't want to give away our hard won info for free  ;).

The idea behind the conversion was always to keep the "plug and play" fitment process as simple as possible. I wanted it so that no permanent alterations to the c5 were necessary, and nothing more than a spanner or screwdriver are needed to fit the kit - which is what we have. This means it was essential to retain and use the armature in its original unaltered state.

Provided the original drive cog fitted to your armature is in a good condition to begin with, this kit will not damage it. I will even go as far as to say that the original setup is more likely to damage the cog than this conversion kit  8).

We've spent a lot of time and money on this and believe thorough testing will prove we've got it right  8)

Another plus side of this conversion is that it will also accept motors that have had their small set of twin bearings snapped off the end of the armature - giving a new lease of life to those damaged components.

As for the large white drive cog fitted to the axle, it may well prove to be a weak link. But bear in mind these cases of fractures and fatigue have only started to surface after many years.

All the failures in maxxed out 24v c5's so far have been the gearboxes - the large axle drive cogs have coped well.
A replacement from Adam might be the cheap and simple answer if you're worried, and I think is preferable to going the chain drive route..

Exciting times  ;D
Title: Re: Dragon Technology gearbox conversion
Post by: techytype on 12, February, 2010 - 18:50:56
there might already replacement for the cog, i.e. on my V4 2.3 cortina engine, it had kind of fiber sprocket on the cam shaft and timing gear.

the amount of washing machine and acr engine designs out there as example, just got to be something close that would fit if they do eventually 'dry up' in supply.

after seeing the demo unit, like everyone else i'd bet, i'm dead keen to see it in voodoo and working, then in behemoth   ;D

regs
alan
Title: Re: Dragon Technology gearbox conversion
Post by: Umpa on 12, February, 2010 - 20:06:07
I think your going down the correct path Karl, the K.I.S.S method is always the best way.

Keep It Simple Stupid - always works !

I gotta get me one of these - let me know when I can !
Title: Re: Dragon Technology gearbox conversion
Post by: radiomarty on 13, February, 2010 - 00:18:25
We have waited 25 years for it....but we are wanting it very soon !!!!!

 Good luck with the testing and thanks for the time and effort in the development. Keep us informed on the testing front
Title: Re: Dragon Technology gearbox conversion
Post by: Wizbat on 15, February, 2010 - 15:03:01
Me want!!
:-)
Title: Re: Dragon Technology gearbox conversion
Post by: PLOD11 on 15, February, 2010 - 17:58:34
Put me down for two !
Title: Re: Dragon Technology gearbox conversion
Post by: radiomarty on 15, February, 2010 - 22:05:33
Looking like a fair few customers already !!!
Title: Re: Dragon Technology gearbox conversion
Post by: minimin on 16, February, 2010 - 08:56:16
Hi Karl,
Any ideas how much will this cost?  What sort of price range? I might be getting a new C5 if I could get it going at 25mph  ::)
Thanks
Mark
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 17, February, 2010 - 18:09:18
Hi Karl,
Any ideas how much will this cost?  What sort of price range? I might be getting a new C5 if I could get it going at 25mph  ::)
Thanks
Mark

We're still working on the costing, but first we want to make sure it works.

No point haggling for discount with our suppliers only to find we have to alter things later.

 
Title: Re: Dragon Technology gearbox conversion
Post by: Retro Andy on 17, February, 2010 - 18:20:49
No point haggling for discount with our suppliers only to find we have to alter things later.

You will have to try the Terry Tibbs method if you're going to haggle Karl  :D

Retro Andy.
Title: Re: Dragon Technology gearbox conversion
Post by: mike7201 on 17, February, 2010 - 19:32:39
Do you mean Terry Tibbs? 

(http://www.stuallan.com/Terry%20Tibbs.jpg)
Gearbox conversion...  Talk to me!  How much?  Fifty Quid?  I'll give you seventy and that's my final offa!  Nice doing business with you.  Thank you, good night!
Title: Re: Dragon Technology gearbox conversion
Post by: techytype on 17, February, 2010 - 19:54:27
just  thought here Karl, if it is successful quantity produced = price reduced. so  might be well worth you 'pushing' them outside of the C5 community, like to other battery vehicle producers.

(but perhaps not Toyota  ;D).

Regs
ALan
Title: Re: Dragon Technology gearbox conversion
Post by: minimin on 17, February, 2010 - 20:06:46
Do you mean Terry Tibbs? 

(http://www.stuallan.com/Terry%20Tibbs.jpg)
Gearbox conversion...  Talk to me!  How much?  Fifty Quid?  I'll give you seventy and that's my final offa!  Nice doing business with you.  Thank you, good night!
Much love!
Title: Re: Dragon Technology gearbox conversion
Post by: mike7201 on 17, February, 2010 - 21:32:16
That's why they call me Terry Tibbs!
Title: Re: Dragon Technology gearbox conversion
Post by: PLOD11 on 18, February, 2010 - 01:33:06
WHO ??? ???
Title: Re: Dragon Technology gearbox conversion
Post by: Retro Andy on 18, February, 2010 - 06:29:42
Search the fone jocker on you tube  ;)

Retro Andy
Title: Re: Dragon Technology gearbox conversion
Post by: minimin on 18, February, 2010 - 21:19:44
Search the fone jocker on you tube  ;)

Retro Andy

Fonejacker
http://www.youtube.com/watch?v=YVYW-4zPKLE (http://www.youtube.com/watch?v=YVYW-4zPKLE)
Title: Re: Dragon Technology gearbox conversion
Post by: techytype on 19, February, 2010 - 14:18:11
Hi Karl,
me being curious and overly impatient (just like everyone else  ::)), have you set the reduction ratio to be near the same as the original gear box?

is it likely some time in the further future (and with obvious sales strength) to have one more suited to the more powerful 24/36 volt powered C5's? perhaps with a set of different sized internal cogs made available?

regs
alan
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 21, February, 2010 - 19:02:42
Voodoo has had a transplant !!  ;D

(http://i74.photobucket.com/albums/i257/1stbooboo/newgearbox01.jpg)

(http://i74.photobucket.com/albums/i257/1stbooboo/newgearbox04.jpg)

(http://i74.photobucket.com/albums/i257/1stbooboo/th_newgearbox03.jpg) (http://s74.photobucket.com/albums/i257/1stbooboo/?action=view&current=newgearbox03.flv)

All looking good so far, just a little bit of wiring to tidy up and refit the motor cooling fan.

The kit was simple to fit, even I managed it despite just finishing a run of early shifts and feeling a bit tired (alarm goes off at 03:30am :o)

Sounds corny I know, but the excitement of taking the next step in this project meant I couldn't rest until it was fitted to Voodoo !

Having built "challenger", and now this gearbox kit, I have to say ElectricDave is a genius  8) :)
Title: Re: Dragon Technology gearbox conversion
Post by: Retro Andy on 22, February, 2010 - 07:41:12
Go Voodoo, Go Voodoo !

Retro Andy

Title: Re: Dragon Technology gearbox conversion
Post by: minidaz on 22, February, 2010 - 09:18:52
Looking good karl. I want one  ;D

Daz
Title: Re: Dragon Technology gearbox conversion
Post by: radiomarty on 22, February, 2010 - 09:44:36
I have to say ElectricDave is a genius  8) :)
[/quote]

Have to agree mate - top man to have around.
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 22, February, 2010 - 09:59:36
Looking good karl. I want one  ;D

Daz

...I've also had a reply from Jason Bradbury, this project has caught his eye as well  8)
Title: Re: Dragon Technology gearbox conversion
Post by: automino on 22, February, 2010 - 13:05:18
Hi Karl, is the intention here to eventually sell a full conversion kit.  If so I would it not be preferrable to also sell the utimate braking enhancement to tame that 25mph?  I've seen some different applications of disc brakes and wondered if there is one in particular that stands amongst the rest which would be supplied as an optional part of the upgrade.

Im also thinking about future upgrades and the issue of suspension.  Of course this would have to be lightweight and perhaps those mountain bike springs which can be adjusted could well fit the bill.  I'll have a think about how this could be designed in and keep the C5 light.  I may be however that some chasis mods would be needed.   It would be nice to have a C5 fully original to preserve and also one that was truely practical with 24v, disc braking and suspension without excessive cost of mods.

Thoughts folks?  Dont want to spend any time on this if its just sounds like nonsense.
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 23, February, 2010 - 21:38:47
At the moment we are taking one step at a time - and for now that is getting the gearbox conversion properly sorted  8).

Getting involved in anything else at this stage would just be a distraction, both timewise and financially.

I dont see much of a demand for suspension & disc brake conversions at the moment. If the situation changes we can always take a look at it later  :).

Title: Re: Dragon Technology gearbox conversion
Post by: PLOD11 on 23, February, 2010 - 22:56:34
Would this be ok to fit to standard 12 volt version C5, to replace the current standard gearbox ?
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 24, February, 2010 - 09:53:36
Would this be ok to fit to standard 12 volt version C5, to replace the current standard gearbox ?

It is indeed  8)

The idea is that if you wanted to venture down the 24v route, this kit could be the first stage allowing you to run around on 12v whilst saving up for the rest.

Or you could stop at 12v .

 
Title: Re: Dragon Technology gearbox conversion
Post by: techytype on 24, February, 2010 - 11:09:57
the C5 has problems stopping @ 1v  ;D ;D ;D

i wonder with the new gearbox installed if the 'load' warning can be virtually disregarded, was it's purpose might be more about protecting the original gearbox than the motor?

whatever the reason, the metal gearbox certainly looks like it's going to be a large step forward for reliability, especially as it can used to recycle a motor with busted shaft end bearings.

regs
alan
Title: Re: Dragon Technology gearbox conversion
Post by: Umpa on 25, February, 2010 - 09:39:58
No the motor cutout is to protect the motor from overheating or stalling.
Title: Re: Dragon Technology gearbox conversion
Post by: techytype on 07, March, 2010 - 16:48:15
Hi Umpa,

agreed that would be a very good reason, imo the motor run at 12 volt but i understand can run at 36 volts so is very robust.

the weaker links is the transmission chain are with the original gearbox, belt and the large dog, given the motor can run at 36 volt i think the motor generally would take far more abuse (not diret stall) than these components before failing.

has to be said here, the overload prevention methods used especially for its time, was very advanced and a credit to the C5's original design (just a pity about the brakes though  ;D).

as a point of discussion, i work in the electronic security field so i have installed many magnetic locks to secure doors over the ears. i have experience complete electro-magnet coil failures where for some reason the power is switched off and they have to run for extended periods on back-up batteries.

as these battery's voltage drops the current drawn by the maglock increases causing the coils to heat up and eventually fail.

on that basis with the new gearbox inplace and running @ 24/36 volts the motor will produce less heat by running at its designed voltage level, and why i ask can we dispense with this form of overload protection?

regs
alan
Title: Re: Dragon Technology gearbox conversion
Post by: Umpa on 08, March, 2010 - 19:03:31
The motor is not that great to be honest.  Heat is the killer of these things.  The main problem is the stater is secured to the housing with glue/resin, this glue softens and draws the magnets towards the armature causing premature failure

This heat can be caused by labouring the motor, but also with just plain old use.  24v kits can only make this worse, hence all the kits I have seen include a fan.

Its also the reason why C5alive have the cooling kit.

My first C5 had this problem and is a 12v original system.  if it were not for c5alive I would have had to buy a new motor from Adam and that would have been mega bucks.
Title: Re: Dragon Technology gearbox conversion
Post by: techytype on 09, March, 2010 - 21:20:16
explanation appreciated Umpa,

is the adhesive the only issue? if that problem was resolved i assume the windings are up to the job.

if the motor did run cooler on 24 volts at say 10 mph, being we are 'human' the risk is in effectively stalling the motor from standing start having extra power by heavy acceleration, or belting along at 25mph for prolonged periods, even if you accelerated slowly.

so has anyone looked the viability re-fixing the magnets using more modern adhesives? in my trade i use some 2 part resin developed for the sticking the tiles to the space shuttle (so highly heat resistant).

bitter prior experience with super glue's etc failing, meant i was more than apprehensive when asked to use it to stick magnetic locks to plate glass doors, got a letter signed absolving me of any responsibilities.

but it really sticks, no if's or buts, and it stays stuck even under heavy abusive use - i was amazed.

costs about £35 a 'pop' and guess it would do about 4 motors, so is it actually possible to refix the magnets either once they have come loose or as a pre-emptive measure?

regs
alan
Title: Re: Dragon Technology gearbox conversion
Post by: radiomarty on 28, June, 2010 - 08:03:55
Having had a look at Goldfinger after yesterday's Royal Run it appears the belt slip was due to a worn / chipped output cog.I was aware that this was not the best during restoration but was surprised how quick it has gone down hill(no problems on the M and M run). The solution for now is to use a spare slightly worn cog I have with a wide belt and then install the Dragon gearbox and forget all about it.Bring on the metal gearbox.
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 16, September, 2010 - 16:23:35
The plan was to start selling the metal gearbox converions this month (September).

However, this has now been moved to January next year at the earliest...mainly because building the c-5000 took so much longer than expected, meaning electricDave now has a back-log of other stuff to sort.

I know this will come as a disappointment to those eagerly waiting on one, but it just can't be helped.



 
Title: Re: Dragon Technology gearbox conversion
Post by: Kurt on 16, September, 2010 - 18:06:40
Karl, any ideas how much they are going to sell for ? Cheers. Kurt
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 17, September, 2010 - 14:06:58
I'll see what Dave has costed them at, I do know they need a very large lump of ally for the metal "fingers" ...
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 19, December, 2010 - 16:13:09
electricDave has continued his development work on this, I've now fitted the latest prototype to "Voodoo" ;

 (http://i74.photobucket.com/albums/i257/1stbooboo/dragontechgearbox2001.jpg)

(http://i74.photobucket.com/albums/i257/1stbooboo/dragontechgearbox2003.jpg)

(http://i74.photobucket.com/albums/i257/1stbooboo/dragontechgearbox2004.jpg)

As you can see, we're trying out a different motor due to concerns that the original Sinclair motor was struggling to cope with the extra heat.
Title: Re: Dragon Technology gearbox conversion
Post by: Retro Andy on 20, December, 2010 - 05:52:39
Won't the wet and dirt getting through the holes be an issue ?

Retro Andy.
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 20, December, 2010 - 13:05:23
Won't the wet and dirt getting through the holes be an issue ?

Retro Andy.

Some road grime getting through those cooling holes has to be a possibility, but hopefully some road testing will see if it is a problem or not. On balance, the extra cooling should out weigh any potential problems.

Title: Re: Dragon Technology gearbox conversion
Post by: Retro Andy on 21, December, 2010 - 06:00:53
You could always fit the cooling fan closer to the motor, looks to far away in the pictures  ;D

Retro Andy.
Title: Re: Dragon Technology gearbox conversion
Post by: Jonny on 22, December, 2010 - 00:14:32
what motor is that?  :)
Title: Re: Dragon Technology gearbox conversion
Post by: techytype on 22, December, 2010 - 08:54:38
i think once sorted and happy, to protect against ingress perhaps the new motor could have a simple oversized sleeve fitted and a cooling fan fixed on the end to blow in cool air, or draw away the heat?

the fact a new motor has now been sourced will be some releif for the contiued viability of the C5  :)

Alan
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 22, December, 2010 - 20:44:14
It hasn't been tested on the road yet due to all the snow  :(

...might be best to hold off the celebrations until it's been put through its paces  ;D

Looking forward to it though  8)
Title: Re: Dragon Technology gearbox conversion
Post by: frankev on 10, January, 2011 - 23:12:03
Me want to. just one will do.
Title: Re: Dragon Technology gearbox conversion
Post by: Lancealot on 12, January, 2011 - 20:08:53
Any idea when the gearbox conversion will be tested and idea for cost?

On the topic of the new motor with the holes i think Chas on one of his C5's had a panel which would solve the dirt issue.

thanks Lance
Title: Re: Dragon Technology gearbox conversion
Post by: frankev on 12, January, 2011 - 23:12:53
Sorry that I come back about these heat issues, with the original glued engine, I bought 4, 12 volts fans at a lokal electronics shop, original made to cool the processor in a computer. Square, 1.5 cm's thick and just as big as the engine. With a 24 volt engine I can put two of them in series or one of them on a 12volt version. They are just 2 pound each. Is this an adequate option?  ???

greetz

Frank
Title: Re: Dragon Technology gearbox conversion
Post by: coverman on 13, January, 2011 - 08:44:39
Its what I use, having made a duct out of PVC fabric from the fan held to the motor endcase with a large Jubilee clip
Title: Re: Dragon Technology gearbox conversion
Post by: ScubaChris on 27, March, 2011 - 13:29:00
Hoping todays test run of Voodoo's new 24v electrics is going well...
I'm sitting here like an expectant father  ;D ;D

C.
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 27, March, 2011 - 18:45:11
Hoping todays test run of Voodoo's new 24v electrics is going well...
I'm sitting here like an expectant father  ;D ;D

C.

Voodoo completed the Crawley run with no ill effects - to rider or itself  :D

First impressions are good, the motor conversion has more torque than normal but no real improvement in top speed. Power consumption was about the same so overall quite good.

Now chatting with ElectricDave about altering the gearing to get a few more mph...
Title: Re: Dragon Technology gearbox conversion
Post by: ScubaChris on 27, March, 2011 - 22:08:40
Sounds promising  :)
With the extra torque to spare I'm sure it could handle a bigger cog on the motor or a smaller one on the wheel without losing too much power.
Get that calculator out.  ;)

C.
Title: Re: Dragon Technology gearbox conversion
Post by: Retro Andy on 29, March, 2011 - 06:26:25
Hummm, more speed !  ;D

Retro Andy.
Title: Re: Dragon Technology gearbox conversion
Post by: scott on 29, March, 2011 - 23:13:34
lets hope Dave goes for around double the normal ;D I've converted bluebird to 24v but haven't road tested her yet .
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 22, June, 2011 - 18:20:19
One of the reasons for testing this conversion for so long is to see what long term snags are likely to crop up before we release the kit for everyone else to buy.

After RetroAndys Royal Run I checked Voodoo over and found some damage on the chassis so today I completed a chassis change ;


(http://i74.photobucket.com/albums/i257/1stbooboo/voodoorepair001.jpg)

 (http://i74.photobucket.com/albums/i257/1stbooboo/voodoorepair002.jpg)

(http://i74.photobucket.com/albums/i257/1stbooboo/voodoorepair003.jpg)

(http://i74.photobucket.com/albums/i257/1stbooboo/voodoorepair004.jpg)

(http://i74.photobucket.com/albums/i257/1stbooboo/voodoorepair005.jpg)

..whether or not this damage is solely caused by the latest motor upgrade is open to debate. I can't honestly remember when I last checked the chassis  ::). So I've changed it over today and will be keeping a close eye on it. So far, the motor and gearbox combo are excellent and running very well, giving a nice balance of extra torque for hill assist , and just a little more top speed. All those that have tried it out seem to agree it's set about right  8).

Just need to rule out whether or not it damages the chassis now  ;)

Title: Re: Dragon Technology gearbox conversion
Post by: Retro Andy on 22, June, 2011 - 18:42:00
This is what I am thinking about, I know we have loads of fun on the runs etc, but for a 26 year old vehicle we do give them some stick, I am on the look out for a second C5, and I wish to remove anything I can get away with not using (keep the spares for Charlie) and stick a big motor on it just for speed and more fun and laughs, and keep Charlie original and look after it a bit more. Keep us up to date with things Karl.

Retro Andy.
Title: Re: Dragon Technology gearbox conversion
Post by: Lancealot on 22, June, 2011 - 20:06:18
Looks like age corrosion but suggest getting Chas to make a new type of chassis frame.

Lance
Title: Re: Dragon Technology gearbox conversion
Post by: coverman on 23, June, 2011 - 10:02:26
Looks like torsional stress (over the original design level)popped corroded spot welds, and then the twist caused the vetical "web" to buckle..
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 25, June, 2011 - 08:30:08
Looks like torsional stress (over the original design level)popped corroded spot welds, and then the twist caused the vetical "web" to buckle..

..I'm suspecting you're right, but to fully convince myself I'm potentially sacrificing the replacement chassis. If this one splits as well over the next few weeks, then I'll know for sure and we can sort out a strengtheningh bracket or something.

All part of the "r & d" ,and as the old saying goes "no pain, no gain"  ;D
Title: Re: Dragon Technology gearbox conversion
Post by: Retro Andy on 25, June, 2011 - 08:41:38
R & D ?

Retro Andy.
Title: Re: Dragon Technology gearbox conversion
Post by: vanpeebles on 25, June, 2011 - 08:58:07
Research and Development :) I wonder if you could seam weld the chassis then maybe drill the odd hole and put a bolt through with a plate either side.
Title: Re: Dragon Technology gearbox conversion
Post by: Retro Andy on 25, June, 2011 - 09:12:53
I think the chassis was effected by the extra torque from the motor, but I reckon it's
repairable, but it would mean a stronger chassis would be needed if I go this route, I do want to wait till I can get myself a second C5 and modify it in this way.

Retro Andy. 
Title: Re: Dragon Technology gearbox conversion
Post by: Lancealot on 25, June, 2011 - 09:19:50
Chas made a plate on one of his C5's that still allowed the chain and rear axle to be used but strengthen the back end.

Lance
Title: Re: Dragon Technology gearbox conversion
Post by: Jim on 19, July, 2011 - 21:50:32
I do mig welding at a reasonable price if anyone is interested (near portsmouth). I will be doing the chassis on my 24v as soon as I work out how to straighten it out!
Title: Re: Dragon Technology gearbox conversion
Post by: Umpa on 23, July, 2011 - 20:15:07
As these problems would not arise from fitting the gearbox on a 12v machine, I think you should release it.  It would be a good upgrade for people looking for a new replacement gearbox, originals are getting hard to find.

ump..
Title: Re: Dragon Technology gearbox conversion
Post by: Lancealot on 26, July, 2011 - 20:18:21
I agree, when is this new gearbox available. Even if it is effecting the chassis (but not convinced considering other 24v conversions with no effects) then it is the individuals risk.

Come on Karl, 24v convertions are awaiting!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Lance
Title: Re: Dragon Technology gearbox conversion
Post by: Karl on 26, July, 2011 - 22:24:01
Now that Chas has discovered a source of "new" old stock motor/gearbox combo's there seems less urgency than before. So the emphasis seems to have shifted a little from simple finding a replacement or alternative box to now finding a replacement that allows for more performance with equal or better reliability - especially with events like the AER and BVS Electrathon.

Voodoo is performing really well with the latest prototype as Max and Steve will verify. During the Sunday run at Zutphen I was using Voodoo to push Steve and Max along (though not at the same time) after their batteries expired. So far I'm very pleased with it but still keeping an eye on the replacement chassis.