41 replies to this topic

[DugganC17]

one of my dreams has been to build a twini and i have two race engines and a spare shell so could be a posibility but has anyone know of any flaws or ways of making it work Dan

[Artful Dodger]

Graft a front subframe in the back! Use all the suspension / engine mounting points and suspension, just lock the hubs solid from turning as thy would when in he front. With some kind of rod end on a bar rose jointed to the subframe or something

[Alex_B]

Synchronising two engines is very tricky and If you want it to be road legal I dont think you can legally run two engines at once.

The way John Cooper did it in the 60s was modify the rear of his car to accept a front subframe in the back, and it worked well until one of the rear hubs became un secured and ended up totalling his car at a great speed (cant remember how fast but it was a big crash).

you could use the same system, but it would take a lot of engineering to do it legally and safely, If it was me I would use a fly by wire system for throttle controls as that will allow better synchronisation, the gear stick mechanisms would need a bit of thought as I cant instantly think of a way to get it to change gear at the same time for both engines

[Cooperman]

One of the engines needs to have an auto gearbox, or so I think I remember.
It's not easy, but there is a lot of info about it out there if you know where to look.

[Artful Dodger]

Be easier to modify the diff housing to allow a prop shaft to come off it, as special tuning did. They did produce a 4wd A series set up, was fitted to the Austin ant. Very limited production!

Wouldn't be too hard, and would be very very awsome!

[Alex_B]

I have an idea in my head where you could use two manual engines, as they are both in the same orientation, you could have the engine in the rear have the gear stick come below the engine, using a rose jointed lever, but tweaking it so it operates with the other gear stick correctly would be tricky

Be easier to modify the diff housing to allow a prop shaft to come off it, as special tuning did. They did produce a 4wd A series set up, was fitted to the Austin ant. Very limited production!

Wouldn't be too hard, and would be very very awsome!

There was a man on another forum (moke possibly) who was re engineering a 4wd BMC diff looked like a good project

Edited by Alex_B, 04 March 2013 - 10:30 PM.

[DugganC17]

thanks for that guys and as a engineer / welder would be a good project and cooperman you dont know where any of that info is by any chance

Synchronising two engines is very tricky and If you want it to be road legal I dont think you can legally run two engines at once.

The way John Cooper did it in the 60s was modify the rear of his car to accept a front subframe in the back, and it worked well until one of the rear hubs became un secured and ended up totalling his car at a great speed (cant remember how fast but it was a big crash).

you could use the same system, but it would take a lot of engineering to do it legally and safely, If it was me I would use a fly by wire system for throttle controls as that will allow better synchronisation, the gear stick mechanisms would need a bit of thought as I cant instantly think of a way to get it to change gear at the same time for both engines

do you have any pics of the car before or after the crash by any chance

[DugganC17]

I have an idea in my head where you could use two manual engines, as they are both in the same orientation, you could have the engine in the rear have the gear stick come below the engine, using a rose jointed lever, but tweaking it so it operates with the other gear stick correctly would be tricky

Be easier to modify the diff housing to allow a prop shaft to come off it, as special tuning did. They did produce a 4wd A series set up, was fitted to the Austin ant. Very limited production!

Wouldn't be too hard, and would be very very awsome!

There was a man on another forum (moke possibly) who was re engineering a 4wd BMC diff looked like a good project

yes i thought that a similar setup to what is used on the gtm coupe and blast 2 ithink its called kit car bent bar basically goes under the gear box

and a 4wd a series sounds mint anyone got pics of it and if you guessed already i like pics

[Alex_B]

I dont have any pictures but search the internet as there are some, cooperman may have more info about it as I think I may have got some of my info from him as his knowledge is amazing,

John coopers twini mini came about if i remember correctly because he wanted one after helping design a couple of Twini Mokes which were planned for the army as the 2wd moke was a flop in their eyes :)

[DugganC17]

i did hear something like that and have seen pics of the twini moke but would do a mini as is a lot cheaper than doing it to a moke

[Artful Dodger]

Nope, it's going to be expensive!

I still think a 4WD a series will be better though! Il get some pics tomorrow, I'm sure I saved some

[BritishRacingGreen]

http://www.force-rac...ts-twin-engine/

[Alex_B]

I would be a great fun engineering project but it will be very expensive, If it was me I wouldn't look to do it unless I could do it for fun and not be worried about money

[DugganC17]

Nope, it's going to be expensive!

I still think a 4WD a series will be better though! Il get some pics tomorrow, I'm sure I saved some

thanks for that mate would be great if you got some and would be interesting to see if i would the able to machine a new 4wd diff at college

thanks british racing green it looks good but not keen on the nitrous

I would be a great fun engineering project but it will be very expensive, If it was me I wouldn't look to do it unless I could do it for fun and not be worried about money

yeah would be a great project and be nice to take round the shows and have took many minis aprt over the years so got plenty of parts and would be able to get rest of the metal from work and then machine it at college

[DugganC17]

forfot to add in that post that if i did do it would people be interested in a thread to follow or something getting excited now wheres that spare shell