GXH50 vs Chinese Clones

Hi Dax, you keep mentioning your little Titan, are you going to be able submit one WITH 5/8 output shaft, for my 50cc 4-stroke bike engine test/comparison?

I'm sure many would be interested in the results.

Mike

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Mike, You haven't been reading the posts cos on this thread, either here or on your same one at on another forum you were told that the horse power stats were wrong. The Honda's power peak is 1.6 Kw (about 2.1 brake horse power) at 7000 rpm and the HS peaks at 1.4 Kw at 6800 rpm. That is a difference of 200 watt which is just under 0.25 bhp. The Honda performance specs can be believed as accurate but the HS specs could easily be inaccurate.
The best sprocket size for a frame mount using either motor is probably 50T if you are using an 11T freewheel drive sprocket. Maybe 52T if you have to climb serious hills but 56T is slow and causes the motor to rev too high and vibrate and also uses noticeably more fuel.

Hi fosscatti, I have been reading, and I somehow think the Honda's specs can be trusted, while others are suspect. I have read the specs over and over, and have also seen a very loose interepretation of specs, especially from the Grube site, where he quoates 2 different HP's on the same page!

The test bike currently has a 44, I do have 48, and 50 availble for my experiment. Ultimately I will not use a sprocket sandwiched on the rear wheel, tho as that is a problematic area, and always has been on these kits.

It is no accident that I am posting on both sites, as I want to reach as many as possible, and some are here, not there, or there and not here.

IF I could get REAL specs, I would change my opinion. Sadly, interent is full of "beliefs" and sometime short on True Facts.

I wish it were not so.

Mike

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The Hs is practically identical to the Honda but I buy Hondas costing twice the price in $Aus for that tiny bit more power. Most people quite sensibly wouldn't bother doing this. The HS is a proven motor - I've found it to be great. So is the Honda. HS is Chinese & the Honda is made in Thailand or Malaysia (not Japan).If you are talking frame mounts then chuck your 44T out cos it is useless - I've tried it. Goes like lightening on the flat but a headwind will stop you dead so the motor chatters. The smaller the sprocket the higher the speed at which the clutch & motor stat fighting each other and chattering. Go with your 50T and keeo a 48T handy. I'm using a 48T on my HS right now & it's bearble but some big hills are off limits. Frame mounted 4 strokes will not pull up very steep hills as well as the 70cc HT even with a 56T but that doesn't matter cos you more than make up for it elsewhere. I've cut some long trip by 50% with the 48T sprocket.
The power difference isn't worth paying more than $80 for unless you are ashamed to be seen with anything Chinese like I am. Now my Tibetan 50cc V-twin 4-stroke bicycle engine which burns petrol with sandalwood incense puts anything Chinese to shame! ................sadly I'm only joking

Hey mike. not sure what else there is to tell. I mean.. The 48cc Titan will run a bike to 35mph and climb all the hills here where I am and that is 9000 feet or there abouts. I am sure there are other 4 stroke 50cc motors that may be able to out do this.. But.... I am not interested in outdoing this since anything over 30 mph is not legal. I am only interested in provided a solid, efficient motor and parts that is reliable and a pure joy to own. I have it solidly in this Titan style motor. The Titan motor fills the bill perfectly at a cost far lower than anything. Period. It is very Similar to Honda without the oil Alert. Another reason the cost is lower. I am not nor will I request any oil alert for these motors . I have well over 3000 miles and the engine has not burned a drop of oil. The Titan is EPA and CARB Phase II 2008 compliant and Approved.. It is an absolutely wonderful motor and I will run it against any other 50cc 4 stroke motor made. IT is that good. I know a good motor when I run one. And these Titan motors are wonderful !!! I am Taking delivery on 2 Super Titans and I hope to have them soon. They are souped up versions of Titan and will have around 4-5hp. These are factory hot rod motors. I may or may not sell them since I do not want people getting into trouble with this kind of power. But just know they exist and I may have one or two for a few select people. We will see. Just a fun kind of thing. Like a Yenko or something.I already explained to the factory the problem that such a hot motor can cause and why. I think they understand. Maybe not. . My feeling is that I will mount the Super Titan, blast past 50 mph and then park it and say, no way will I sell these. .lol I am sure I can handle that kind of speed..Maybe. On a Masi, Yes.. On a Beach cruiser or Mtn bike? Yikes !!!! Pray for me. As I do have a need for speed. There are spots around here where I can get alone and open up for that kind of speed on a Beach Cruiser? Yikes!!! I am going to do it.. You know I am.. At least once..And I am not going to put it on my Masi...lol.. It may be that the cops will want them on their bikes so they can intercept everyone else on the Regular Titans.. No fair !!! Lets give the cops the regular Titans and we get the supers !!!! lol.. Enjoy the ride...

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HI Fosscati, your info is very helpful. Do you think that the Honda nets you 2-3 mph more than the HS? Apparently you get a bit more hill climbing ability?

I am figuring the HS as a baseline, with the Honda as a more deluxe version. Even .25 hp, IF that was all that was availble, should be easily felt?

I am anxiuos to get back to the garage, and kick off this project at the hands-on level, but, alas, the Beach really did need to come first! There is soo much to do.

Dax, after I read your post, I'm just guessing that you do not have a 5/8th shaft engine to join into my little project?

I have seen clearly that the in-frame system as we know it know, certainly has it's shortcomings. But I do think that the 2-strokes day are numbered, and that number is not a very big one.


Mike

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I do not know the size of the output shaft. I would have to pull the clutch pack to measure. It is tapered . As for your project, I have not been keeping track of your project sorry. But Titan engines are for sale if you want one.

Also.. 2 stroke days are numbered? Not even. All the new 50cc scooters for 2008 have gone back to 2 strokes using oil injection.. Evinrude E-tech and Mercury Optiplex for the past couple of years also have new 2 stroke fuel and oil injection engines that are the best in the business. Also the overhead Valve 2 stroke diesels are also popular. The 2 strokes are simply an engine that makes power on every stroke. This can be done with overhead valves or port valving with exchange ports. A 4 stroke makes power every other stroke. So I have no idea why a 2 stroke would be numbered and a 4 stroke not number. Makes no sense at all. From my studies currently, I see 2 strokes coming on strong. Who knows.. It may be the 4 stroke days that are numbered. The market will dictate what happens. And right now, the market is demanding better 2 and 4 strokes..And the market is getting it !!!! Enjoy the ride..

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HI Dax, well you have posted every time I have, about my 4-stroke comparison, so I can't figure out how you wouldn't know.

But, it's ok, I cannot use a tapered shaft, so it wouldn't matter.

Mike

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NEW Model 10 production bikes
Whizzer, Starfire, and SkyHawk

Well.. My postulate was that you were wanting to do a comparison, that is the inference. It was and still is unclear to me as to the type of application or comparison type testing. Were you going to use a Hydro comparison dyno test off the PTO ? were you wanting to use the gear box PTO applicable to the Engine being tested to a transfer pump? or were you going to mount the Engine and applicable Gear box PTO to a wheel chair? Bicycle? Go Cart? I guess my inquiry is getting too in depth. Forgive me.. Never mind. I guess I should scroll up and back to see what you have in mind for testing. I do not mean to be a bother, I was just curious. I am done.. Sorry to bother.. Enjoy the ride....

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Hi Dax, I don't do waterpumps, norhave a dyno. The testbed is a specific bike, with a speedo, and ultimately 3 stock pipes to be modified during the test.

The engines will be put on the stock grube gearbox to asses each engines "roadability" abd tested with the various pipes. Then I will modify the pipes and repeat the process till I am satisfied with the results.

Then I will ditch the grube box, and set the engine up in a different fashion.

This is all about motorbikes, nothing else.

Mike

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www.simpsonmotorbikes.com
Home of the 08 Racer and
NEW Model 10 production bikes
Whizzer, Starfire, and SkyHawk