LocostUSA.com

Learning how to build Lotus Seven replicas...together!
It is currently September 27, 2022, 3:17 am

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 7 posts ] 
Author Message
PostPosted: July 21, 2022, 5:25 pm 
Offline
User avatar

Joined: July 29, 2006, 9:10 pm
Posts: 3124
Location: Oregon, usually
Hard to believe I bought this engine sixteen years ago, but the sad truth is, if I haven't got around to building this car yet, I'm not likely to in the next sixteen years (when I'm 90).

Triumph Rocket III 2300cc engine w/five speed transmission, dry sump, fuel injection, hp specs at 130 to 145 depending on where it's measured (rear tire or crankshaft, and probably somewhere in between when coming out of the trans). Compact, light weight, and would be a fabulous Locost powerplant...
Attachment:
R3Cropped.jpg

...a whole lot more fabulous than it is in a touring bike, in my opinion. I think it's a ridiculous amount of power for a high handlebar motorcycle, but if that's your thing, you can ride it out of here, once you put on turn signals and a tail light, 'cause it got rear ended at a stop sign and the fender and back lights got smooshed; fortunately the rest of the bike was protected by the 9" wide 240/50-R16 rear tire. There's enough cosmetic damage on the left side (after impact, the bike fell over) that I got a good deal on it (though not as good a deal as you're getting)

For $2995, you can take the whole bike, or I'll tear it down to its car-ready essentials (engine package inc. oil tank, electrical inc. computer and wiring harness, tachometer, air box, exhaust header, etc) for free (I'll earn back my labor by selling the leftover bits),

I'll put this up on my local Craigslist next week, as a Do-It-Yourself Bobber, but I wanted you folks to have first shot at it


You do not have the required permissions to view the files attached to this post.

_________________
Locost builder and adventurer, and owner/operator of http://www.kineticvehicles.com


Top
 Profile  
Reply with quote  
PostPosted: July 21, 2022, 6:03 pm 
Offline
User avatar

Joined: March 3, 2006, 10:48 pm
Posts: 1570
Location: Shawnee, Ks
Somebody PLEASE buy this!!!! I always thought this motor would make a great BEC. If I were younger I would buy it. Russ

_________________
You meet the nicest people in a Locost Se7en.


Top
 Profile  
Reply with quote  
PostPosted: August 4, 2022, 5:41 pm 
Offline

Joined: May 30, 2021, 10:48 am
Posts: 8
Which way does the output shaft rotate? It's on the left, correct?


Top
 Profile  
Reply with quote  
PostPosted: August 5, 2022, 3:37 pm 
Offline
User avatar

Joined: July 29, 2006, 9:10 pm
Posts: 3124
Location: Oregon, usually
Davesax36 wrote:
Which way does the output shaft rotate? It's on the left, correct?
It's on the left, right...I mean correct. Which means either use a 4WD/AWD front diff, or a RWD diff flipped over, or remove the driveshaft reverser built into the engine case and make up an output yoke that connects directly to the output shaft of the trans. Which is what I would do if I was making ten of these, but for one, the 4WD/AWD front diff/axle option (mounted in the rear, of course, for rear wheel drive) would be by far the easiest.

And BTW, it has 10,106 miles on the clock. It got rear ended, it didn't get worn out, and it's been parked indoors ever since.

_________________
Locost builder and adventurer, and owner/operator of http://www.kineticvehicles.com


Top
 Profile  
Reply with quote  
PostPosted: August 7, 2022, 7:28 am 
Offline
Automotive Encyclopedia
User avatar

Joined: December 22, 2006, 2:05 pm
Posts: 7611
There are exceptions to the typical direction of rotation. Unlike a belt/chain drive, I would not assume the shaft turns one direction based on the side it comes out of unless you know what side of the ring gears drive or are driven by the pinions on each end of the shaft. There are reasonable cost options either way. :cheers:

_________________
Miata UBJ: ES-2074R ('70s mazda pickup)
http://www.vsusp.com
ford IFS cheap viewtopic.php?f=5&t=13225&p=134742
Frame L x cockpit W x eng bay HT (w/o hood/bonnet/cowl)
Lotus Super Seven: 115 (no spare) x39x7.25
Tiger Avon: 114x40x13.3-12.6
Champion (Book): 114x42x11
Gibbs Haynes: 122x42x14
Voo Doo: 113x44x14
McSorley “442”122x46x14
Collins “241” 127x46x12


Top
 Profile  
Reply with quote  
PostPosted: August 7, 2022, 10:47 am 
Offline
User avatar

Joined: July 29, 2006, 9:10 pm
Posts: 3124
Location: Oregon, usually
Miatav8,MstrASE,A&P,F wrote:
...I would not assume the shaft turns one direction based on the side it comes out of unless you know what side of the ring gears drive or are driven by the pinions on each end of the shaft.
That's a very good point. I think I'll walk down to the storage place and take a look. I THINK I remember it being the reverse of a typical RWD diff, but a look would be best.

_________________
Locost builder and adventurer, and owner/operator of http://www.kineticvehicles.com


Top
 Profile  
Reply with quote  
PostPosted: August 7, 2022, 3:25 pm 
Offline
User avatar

Joined: July 29, 2006, 9:10 pm
Posts: 3124
Location: Oregon, usually
Well I'll be dipped, I'd gone to lots of trouble to determine how to make a drive shaft rotation reverser for the Rocket III (at a time when I was considering this engine for a production car...ah, the dreams of youth) and it already has one built in! Yes, unlike the Gold Wing, and dang near everything else in the cruiser bike world, the drive shaft pinion is on the left of the ring gear, just like a regular car!

Mind you, it's geared pretty tall. With its 27" OD rear tire and 2.841 final drive ratio, it claims 145 at 6000 rpm, so figure 3000 puts it between 70 and 75, so a Miata diff isn't going to be a good choice, unless you want to go to 100 right away and stay there. The Miata ND diff would be perfect for loping along the freeway (at 2.866) but NA through NC have 4.100 final drive and they're anoyingly spinny even in a stock Miata.

Lucky there are lots of other rear differential choices.

_________________
Locost builder and adventurer, and owner/operator of http://www.kineticvehicles.com


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 5 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

Jump to:  
cron
POWERED_BY