[Woodsmith]

Originally Posted by electromet

Wood,

I noted that you expressed an interest in a 13" motor the other day, and I just want to make sure that you've checked all the appropriate clearances to the transaxle case & driveshafts from the cenerline of the motor shaft. It would be a shame to find out the darn thing doesn't fit alongside the MR2 mechanicals. Maybe you should make a cardboard motor mock-up?

Mike

Yebbut, if I could use a really big motor I probably would, but it would also be a waste of motor and weight!
The biggest I can get in is an 11" motor but I do have to be careful as it has to be 11" and not 11 and a bit. I only have a measured 1/8" clearance to the flange on the CV joint.

If I find it gets a touch too close I will machine a little off the CV flange, there is about 3/8" of flange that doesn't do much.

[electromet]

I just wanted to make sure you did your homework. It looks like you're right on top of things.

Mike

[gottdi]

The commutator in this photo looks like doo! doo!

[scarab]

the availability of second hand motors in western australia is zero.
what is the difference between say a 25 Kw generator and an AC motor of a similar size?
There are numerous second hand petrol/gasoline/ diesel generators up for auction from old mine sites etc.

[Tesseract]

Originally Posted by Woodsmith

J...Seriously though, is my thinking correct in looking for an 11" over, say, an 8" or 9" motor for high speed cruising?

Nah... Plenty of people blast down the highway just fine with 9" WarPs, ADCs, Kostovs, etc... An 11" motor is going to have an awfully low top RPM limit without getting the commutator reinforced with Kevlar banding, etc... 8" and 9" motors are usually a better fit for most vehicles. That's just my personal observation/opinion, not really based on any extensive engineering analysis; worth price paid.

[Jordysport]

Originally Posted by Tesseract

Nah... Plenty of people blast down the highway just fine with 9" WarPs, ADCs, Kostovs, etc... An 11" motor is going to have an awfully low top RPM limit without getting the commutator reinforced with Kevlar banding, etc... 8" and 9" motors are usually a better fit for most vehicles. That's just my personal observation/opinion, not really based on any extensive engineering analysis; worth price paid.

Hi, my donor vehicle i estimate a kerb weight of 1000kg with driver and fully converted, i am thinking of using a Kostov 11" 192V as its only $500 more expensive than the 9" 144v. would it be best to stick with the 9" as its half the weight of the 11" (41kg comparerd with 81kg)
thanks

[paker]

Originally Posted by Tesseract

Nah... Plenty of people blast down the highway just fine with 9" WarPs, ADCs, Kostovs, etc... An 11" motor is going to have an awfully low top RPM limit without getting the commutator reinforced with Kevlar banding, etc... 8" and 9" motors are usually a better fit for most vehicles. That's just my personal observation/opinion, not really based on any extensive engineering analysis; worth price paid.

With the large amount of torque the 11" motor puts out would one need high RPM? The 11" 250v Kostov is supposed to top out at 5600 RPM.

[jackbauer]

Well my 11.5" forklift motor pulled the bmw up a hell of a hill in 4th with two 5 year old batteries and a boot full of tools! Torque it has

[paker]

Originally Posted by jackbauer

Well my 11.5" forklift motor pulled the bmw up a hell of a hill in 4th with two 5 year old batteries and a boot full of tools! Torque it has

What kind of amp draw do you have when you do that?

[jackbauer]

Peaked at 400 motor amps.