LocostUSA.com

Learning how to build Lotus Seven replicas...together!
It is currently September 24, 2017, 8:32 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 10 posts ] 
Author Message
PostPosted: September 11, 2017, 12:52 pm 
Offline

Joined: August 21, 2017, 5:31 pm
Posts: 4
Hi! I'm interested in building a locost in the future, especially if my means permit me to do so; right now I'm gathering info as early and much as possible. Since the idea of locost is skimping on expenses while keeping the quality of the output, would an aftermarket gearbox, like these products in this gear box range be suitable for those who are just starting out, or should I opt for the gearboxes from well-known car companies? If I'll be opting for the latter option, there would be an increase in expenses, right? :BH:

Hope I was able to construct my question well. Would love to hear your thoughts on this one. Thanks!


Top
 Profile  
Reply with quote  
PostPosted: September 11, 2017, 5:45 pm 
Offline

Joined: November 11, 2013, 4:47 am
Posts: 564
Location: No. Nevada
What is your main donor vehicle?
Factory gearbox is usually the cheapest way out.
Some donors are nearly free, think of a rusty but running Triumph Spitfire or MG Midget.
Not so powerful but still rewarding to drivers skill.
Miata appears to be popular with the younger crowd.

_________________
If I must be a one-man PC free zone, so be it!


Top
 Profile  
Reply with quote  
PostPosted: September 11, 2017, 6:54 pm 
Offline
User avatar

Joined: August 27, 2005, 1:04 am
Posts: 1228
Location: Kamloops, BC, Canada
I looked at the page briefly, and those don't look like automotive transmissions. More like industrial gearboxes. The route that is most likely to be the cheapest and easiest will be to find a front engine, rwd donor car, and use the complete drivetrain out of it. If you have access to a lathe, then you can mate basically any transmission to any engine. I went this route with my car, because I used a plentiful and cheap engine from a front wheel drive car, and then built a flywheel and adapter plate to put a rwd transmission behind it.
Kristian

_________________
V6 in a book frame build. Now registered.
viewtopic.php?f=35&t=7587


Top
 Profile  
Reply with quote  
PostPosted: September 11, 2017, 6:58 pm 
Offline
User avatar

Joined: April 22, 2010, 4:43 pm
Posts: 272
Location: Livermore, Calif.
As Richard said, you should seriously think about an automotive gearbox but also think about the engine and maybe even the differential at the same time. If you keep your eyes open you may find someone who just wants to get rid of an old car that might make a good donor. One was listed on this site not too long ago. Think simple and rear wheel drive. There must be some old MG's or Triumphs around that would make excellent first go-rounds for construction. (I think I'm just repeating what Richard said!)

Look around the neighborhood for old vehicles just sitting but with a drive train and other components still usable.

Roy

_________________
Build log http://www.locostusa.com/forums/viewtopic.php?t=16510


Top
 Profile  
Reply with quote  
PostPosted: September 11, 2017, 7:56 pm 
Offline
User avatar

Joined: March 3, 2006, 10:48 pm
Posts: 1285
Location: Shawnee, Ks
What area of the country are you? Is there a builder close to you that you can go over to an pick their brain? Miata trannys are cheap and several Mazda motors and Ford motors bolt right up to them I think. If possible stick with a single donor as that will simplife your life. I think Jack McCornmack on here may have some paletized Miata donors. If not Flying Miata will. Russ

_________________
You meet the nicest people in a Locost Se7en.


Top
 Profile  
Reply with quote  
PostPosted: September 11, 2017, 10:34 pm 
Offline
User avatar

Joined: March 19, 2011, 10:22 am
Posts: 925
Location: Holden, Alberta, Canada
Hi drex22. Welcome to the forum for building awesome Super 7 Locosts.

What part of the world are you from? That would determine the availability of donor for your build.

Had a look at the hyperlink to the gearbox you were asking about - those are for industrial applications, not automotive. I am assuming when you are talking about a gearbox you mean automotive manual transmission. As the replies from the guys say - find a rear wheel drive donor car, that will provide you with most of the donor parts you require.
Again welcome and you have definitely have a wealth of info to read and research here.

_________________
Perry

2 down, 2 to go, no 3 to go

'If man built it, man can fix it'

"No one ever told me I couldn't do it."

http://www.locostusa.com/forums/viewtopic.php?f=35&t=12234

http://www.locostusa.com/forums/viewtopic.php?f=35&t=14030


Top
 Profile  
Reply with quote  
PostPosted: September 14, 2017, 8:08 am 
Offline

Joined: August 21, 2017, 5:31 pm
Posts: 4
Thanks for the inputs, everyone. Since your answers are relevant to each other, I think a catch-all reply should be enough.

I don't have any donor cars yet at the moment. Yeah, the site looks like an industrial equipment company, but as you guys said, industrial gearboxes can be the cheapest option. The question is, how did they fare when you used one for your locost?


Top
 Profile  
Reply with quote  
PostPosted: September 14, 2017, 9:01 am 
Offline
Mid-Engined Maniac

Joined: April 23, 2006, 8:26 pm
Posts: 5715
Location: SoCal
I don't think anyone here has used an industrial gearbox as part of a car build.

_________________
Midlana book: Build this mid-engine Locost!, http://www.midlana.com/
Kimini book: Designing mid-engine cars using FWD drivetrains, http://www.kimini.com/book_info/


Top
 Profile  
Reply with quote  
PostPosted: September 14, 2017, 10:08 am 
Offline
User avatar

Joined: December 17, 2010, 1:24 pm
Posts: 1021
Location: Gainesville, Mo.
As a retired industrial maintenance mechanic, I can say with some confidence that an industrial gearbox is NOT what you need. Almost without exception, they are a single, fixed gear ratio. On the rare occasions when I have come across a multi-ratio box, they were not a shift-on-the-fly unit. The gearboxes shown on the page that you listed are entirely the sort that I worked with for decades in the industrial arena. You've come to the right place to learn most all that you will need to build your own sports car. The guys that have replied (excluding myself. I'm still a wannabe) have all been down the road a time or two, so sit at the feet of the Masters, and learn! :cheers:

_________________
Mike - Read my story at http://twinlakesseven.blogspot.com/


Top
 Profile  
Reply with quote  
PostPosted: September 14, 2017, 11:08 am 
Offline
User avatar

Joined: July 17, 2008, 9:11 am
Posts: 4322
Location: West Chicago,IL
Most industrial gearboxes that I have seen are not rated for the RPM's that our engines run. You haven't mentioned the application here. Are you looking to replace an automotive manual transmission, are you trying to make a 90 degree change in axis, maybe for a BEC?

As has been mentioned industrial gearboxes are generally a single ratio setup. Some specialty ones are continuously variable.

In the case of a CEC, nothing will beat the price of a transmission from a single-donor vehicle. Back in the day, several builders bought a lightly-used Miata, parted out parts not needed and after keeping the parts necessary for their build, actually came out with money in their pocket.

The variables are many. One cannot make your build choice based on the price of a single component and come out with the lowest cost overall build.

FYI, I built my locost based on the original low-cost philosophy that Ron Champion preached with his book. While not as creative as he was, I managed to keep my raw build costs to around $5K, not including any donor component refresh costs that I chose to do to make it reliable. That added around $2k. I could have done it for less, much less.

_________________
Chuck.

“Any suspension will work if you don’t let it.” - Colin Chapman

My RX7 powered Locost is now for sale http://www.locostusa.com/forums/viewtopic.php?f=40&t=18460

or visit my Cushman Truckster resurrection log: over HERE


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
POWERED_BY