HRS Super Copper Gasket

RC Copper and Ultra Thin Marine Copper and Ultra Thin

Now available in .005 and .020 (stock) thicknesses

Questions that come to mind...

How about an inexpensive, easy to install modification you can do yourself?
Need more torque?
Would you like to run that large spindle (go faster) on your Go-Ped without bogging down the engine or loosing low end power?
Want to spin that large prop on your plane or boat?
Don’t want to pay a machinist for what you can do yourself!

Read on…

One of the first steps in hopping up an engine is to increase compression ratio and gain proper head clearance. Until now cutting the cylinder base on a lathe was your only avenue.

Not Anymore....

Install one of my .005 (1/4 standard thickness) gaskets. Instantly increase compression and gain proper head clearance.

For those needing consistent head clearance with stroker and 27cc motors, we have a solution for you as well. Stock thickness (.020) copper gaskets.

How about those folks tired of replacing substandard gaskets with another substandard gasket?

Running Alcohol....need I say more. HRS Super Copper Gaskets.

Prototype Gasket

Testing

Pictures above are of my test scooter, courtesy of my good friend Dean and his son

At the time of testing, I was not a Go-Ped owner, I did borrow a good friend of mine's for R&D work. The California Go-Ped used for testing was a G23LH powered Liquimatic. I used regular unleaded gasoline, mixed 32:1 with Amsoil. Conditions were 85°F at 36% humidity. My street is slightly angled so bear that in mind when interpreting the results. Data was taken with an on-board Sendec tachometer that collects maximum rpm attained.

Running down hill

With stock .020 gasket maximum rpm attained was 11,040
With H&R .004 gasket maximum rpm attained was 11,400 (surprised me)

Running up hill

Improved dramatically with the H&R Ultra Thin Gasket.

1/2 second consistent reduction on a straight, 300-foot, uphill acceleration path was timed

Personally, I am 5’9” and 185 lbs and older than most scooter riders. Obviously, I am not your typical Go-Ped rider. My point here is that if this kind of improvement can be realize with an inexperienced (and heavier) rider, then further improvements should be attainable with “Pro’s” like you.

My experience with Zenoah’s is in RC Boats. I did note that the stock LH motor is not nearly as modified as our boat (G23PUM (2D style), RC230 and G231/260PUM) engines. Stock LH ports and carb are small and no tuned pipe. Coupling my gasket to internal mod’s and bolts-on’s, should really "wake" up the LH Zenoah.

Improvements

Improved Torque- noticeable from a dead stop and but really shines in high load situations (hills and out of the corner acceleration)
Drivability-when you hit the gas, it goes...instantly. No bogging.
Ease of installation-a 20 minutes with an Allen wrench and Phillips screw driver
No machining required-this feature is worth more than can be measured
Great for Go-Ped's, RC cars- planes- helicopters & boats (of course)
Run larger spindles and props
More power with good idle characteristics
Reliable, easy starting characteristics are maintained
Easy installation for all skill levels
Almost 400rpm improvement noted during testing, but not a guarantee. To be honest with you, I really did not expect any rpm gain. I felt like torque (seat of the pants feel in acceleration) was going to be the only gain.

Recommended Hardware for Cylinder Bolts

Recommend adding a Split Lock and Flat Washer to prevent cylinder bolts from loosening.

Testimony

I asked Dean if he and his son had been riding their Go-Ped since I returned it with my Ultra Thin Gasket installed.

Dean's response..."You bet. Chandler has been riding the @#%&* out of it. The major difference I've noticed is sustaining revs off the line. Every since it was brand new, with my weight on it, it would bog down off the start. Now it maintains off the line. Great improvement. Thanks"

Just to give a point of reference, Dean is built like a football player...

Hi friends (message posted on Jim's RC Boat Dock)
After a disappointing day at the lake Saturday I came home to find my new Hanson pipe and thin gaskets setting at my front door. After installing both I went back to the lake this morning and on the first run I finally made my goal of 60 mph, actually she hit 64. It was a perfect day and everything went great, man this is fun.

Bob Russell
Fontana, CA

David

I installed one of the gaskets along with a new Hanson pipe and went back to the lake this morning. My best speed up till now was 59 mph and this morning I hit 64. The gasket went on easy and the results speak for themself. Thanks again for your help and a quality product.

Bob Russell
Fontana, CA

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