Long trip preparation inquiry

[San Arthur]

Was there such a thing as a low compression engine for low quality gas countries?

[San Arthur]

Perry brought Zenaida back from Fort Worth but it was too late for a test run.
He didn't find anything wrong with the cylinder measurements, he cleared the air flow which was obstructed by the filter box hose.
New set of spokes in the back, and balance of both wheels, new tires, and fix both wheel bearings.

Hes professional opinion is that I have a side car final drive set.

I'll test drive it in a few minutes and will post my impressions. I'm thinking of bringing the R90S out of retirement, just in case.

[schrader7032]

You mentioned that the final drive was 4.16...that should be a 25/6 stamped on the drive...that's a solo drive. A sidecar final drive would be 26/5 or a 5.20 ratio.

The only way to know for sure is to manually count the number of driveshaft turns versus the number of rear wheel rotations.

[Bruce Frey]

Why would you ever retire an R 90s?

Bruce

[San Arthur]

I did Kurt and I get 4.16 every time.

This time around I got easier to 60 mph, with the air filter on.

Rings and valves were checked again and everything looks ok.
I'll check the compression again tomorrow.
I'm thinking about asking for a second opinion.
Kurt, are you familiar with a mechanic in the area?

Thanks

[San Arthur]

Why would you ever retire an R 90s?

Bruce
Why would you ever retire an R 90s?

Bruce
Why would you ever retire an R 90s?

Bruce

Is an interesting question.
I worked on the R90S for several years until I left it in a great riding condition, next on the list was the original silver smoke paint.
By then I found another motorcycle that needed lots of work and attention.
Since my garage is small I moved the R90S to the corner and stop using it.

I guess I lost interest.

I never thought about it......

[schrader7032]

I'm thinking about asking for a second opinion.
Kurt, are you familiar with a mechanic in the area?

Not for anything this vintage. I suppose Alamo BMW might be a consideration. Everytime I stop in there, I always check the shop area for anything old they're working on. They were doing a complete restoration of an R50/2 or R60/2 engine. I've seen quite a few Airheads run through the shop.

What are you interested in an opinion on? I have a few tools and gages and could provide some input. Is it that you can't get past 60mph? On my R25/2, I did the best I could to statically time the bike at idle but never could figure out where it was timed at full advance. Turns out my flywheel doesn't have a full advance mark, so I had to put a self-made degree wheel on the engine and figure it out myself. Turns out I was way retarded and wasn't getting to full advance. I went through the process of tweaking the timing so that I was getting closer to proper timing at full speed. Maybe that's something you need to confirm.

[San Arthur]

Thanks for your kind offer, I run out of ideas and my mechanical ingenuity reached its single cylinder limit.

You can’t imagine how much you have helped me so far, I really appreciate it.

I just talked to Vech and he also mentioned to check the timing at full advance; and to check the silencer since it might be restricting the exhaust. I’m going to make a loud run latter tonight!

I also remembered a recommendation by Skip Macorro from Motodiscovery.com about a great mechanic in the area, Carl Santora. As a matter of fact he read my posts and sent me a PM.

I’ll be out of town for the Memorial day weekend and will visit Kermit to following, thanks for the tip.

I’m curios to find out why, if everything seems ok, it can’t go over 60 mph?

[schrader7032]

Sent a PM.

[San Arthur]

I went to Mexico to pick up my car after a few years in storage.
I took the car to the mechanic to prep it for the drive back unfortunately we detected a serious case of rust.
To make a long story short, my car will stay in Mexico for repairs.

I know this is not a car forum but I needed to share that I feel terrible for neglecting my car so much.

Back to trip!!
Vech was kind enough to make suggestions about the replacement parts I'm taking to the trip and I just received them.
Finally the heat is subsiding and I'll road test the bike this week.