Honda Gyro TG50M (1985)...lets make her faster?

[Twilight]

Tell that to the boys in Japan.. they will SHOW you otherwise.

[ALOW1]

the gyro & spree were never meant to be modified! a yamaha razz has more hi-po parts- i still have rare honda express parts that will scare you

The pipes are not real common but can still be found. Most common are the Malossi Wild Lion's like this one:



The bores can still be bought new.

http://cgi.ebay.com/ebaymotors/honda-ho ... 0351343570

[Twilight]

Been a while but I do have a update.

The gyro will in the next 2 months be a 68cc scooter with almost 6 1/2HP to work with. A stock Gyro S has 4hp, and hard to tune. After talking with some people and friends in Japan, I found a Gyro X engine fits and works better. Gyro X has 5HP off the bat. It is also almost twice as heavy as a Gyro S. Also has a CVT!!!!!

Stock a Gyro X engine brings 35mph, but as I said the Gyro X is double the weight. I am not sure how fast this will make a Gyro S, but am hoping for something good.

Shipping is costing more than everything

[mousewheels]

Yo mouse, wanna do some snow riding?

Sorry, with holidays - missed some of the thread. That was a Lot of snow!

After talking with some people and friends in Japan, I found a Gyro X engine fits and works better.....snip...Also has a CVT!!!!!

Excellent, more power and CVT! Wish there were GyroX parts in the US. I poked around the 3_wheel_mopeds_Honda_Gyros group, and sure enough found a photo of a swap. This I think is a pic from Japan. I know I've seen the photo before, I must have just mentally wrote off "Engine swap" for lack of parts. Your's is going to be a runner!

[mousewheels]

The pipes are not real common but can still be found. Most common are the Malossi Wild Lion's like this one:

Thanks, nice pic. I'll go off and search for them.

[malaka]

i am going to look at a 1986 gyros s this week. just wondering what the final outcome was. does the aero cylinder work or did you get a gyro x one. any help would be great.

[bradthreee]

Anything new in the Gyro tuning world?

[mousewheels]

i am going to look at a 1986 gyros s this week. just wondering what the final outcome was. does the aero cylinder work or did you get a gyro x one. any help would be great.

Hey - sorry, you posted this and I missed it.

The Aero cyl modeled would require case cutting and exhaust pipe re-routing. My interest there was to see if a bore kit for an Aero could fit. But then twilight got going on getting a complete GyroX powertrain from Japan, which would eclipse what I'd been looking at. I've been sitting back performance wise to see how twilight's work would pan out.

Meantime, the 2 Gyros worked on last year (see pic on page 1 of this thread) were brought up to just the runs stage before fall set in. This year, I got them out and a few miles on them. Result was that both still need major work. One died with a transmission failure, the other with a crankshaft bearing problem (that one had a bad air filter and sand inside when received...). That there were still problems was not unexpected. They had a hard life as ocean beach rentals, then were stored for 10 years. Made a swap to a worn but running power train last weekend - just to have a Gyro to ride for the summer. The other is torn down to bare cases.

--- Compromised air filter damage engine --
Drilling down on that engine that had the bad air filter then ran on the beach. One of the things that prevented the engine from even starting was a worn reed block. I posted a pic over the winter, and we concluded that it was sand damage.


The obvious next worry was, couldn't be good for any parts downstream. In fact the engine required a reed swap & new top end to even start last year. So this year, finding the bottom end is bad too is no surprise. Sometimes the simple things that wipe out everything, air filter just got installed by the p/o with a gap. And blowing fine ocean sand constantly got through.

[bradthreee]

Updates?

[mousewheels]

Updates?

Ouch - one word 'Updates' and I'm , A look at the past 6 months - I've got to say I'm slacking on this project. Thanks for asking, it helps with motivation . Last year I played with meters for CHT's, got an '98 Elite SR, (Trashes a Gyro, bone stock) an '84 Gyro fixer and got a chance to work on the wiki here. But foremost have been having the best time watching everyone's projects here

Progress -

1. One replacement crank scored for the poor sand eating engine. Sometimes a Gyro part can take a few months to score.
2. NLA 16004 bearing on hand - goofy - 16004 bearings can be bought from many sources - but part of the fun is keeping in the cycle world and paying less than retail - It's an Italian bearing I think from a Ducati that I got.
3. The other crankshaft bearing and seal are easy - buy from Honda
4. No luck on engine gaskets, going to have to cut them
5. Currently searching for a 25x42x6 crankshaft seal - NLA from Honda. I've found seals of the same dimensions various places, but want to find one known to be used in a 2 stoke application. Interesting find is that some Lambretta's use this size for the outer magneto seal (not subject to crankcase pressure differentials), and some Suzuki 4 strokes use this size. I'm no seal engineer but have looked at a couple company's oil seal application info, which points to standard shaft seals are not intended for pressure/vacuum usage, hence a reluctance to buy a std seal. Advice here is appreciated.

[elitedio]

I rode a new Gyro around town. Seeing this thread made me remember my brief ride. It was unique. Handling was squirmy at some speed but it was a lot of years ago.