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Old 08-02-2012, 01:33 PM   #11 (permalink)
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210.7 miles on 2.38 gallons of fuel, just over 88 MPG. I did run it hard a couple of times. Maybe if I can drive the next tank conservatively, I might hit 90 MPG. Average speed is probably close to 36-38 MPH.

210.7 miles on $8.16 cents worth of fuel, around 3.87 cents per mile.

Man I love this bike.

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Mech

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Old 08-02-2012, 06:55 PM   #12 (permalink)
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Thanks for the impressions Old Mech, and congratulations on a great deal!

I fondly remember sitting on one at the 2011 motorcycle show in Seattle. Reminds me of when motorcycles were simple, comfortable and fun because of it. With just a slight forward lean, maybe a small windshield would be all it needs for longer distances.

Great numbers! Gotta love the EFI.

Sounds like the performance is very similar to it's thug sister, the GZ250. But I think it has a mileage edge of somewhere around 8-10 mpg over the GZ.
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Old 08-03-2012, 09:42 AM   #13 (permalink)
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Quote:
Originally Posted by Old Mechanic View Post
210.7 miles on 2.38 gallons of fuel, just over 88 MPG. Maybe if I can drive the next tank conservatively, I might hit 90 MPG.
Told you so

88mpg on the first tank is nice.
It should get even better when it's properly broken in, and when you're getting used to it.
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Old 08-04-2012, 05:35 PM   #14 (permalink)
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First I thought it was a newish clone of the GN but it is not since the older model is a four valver.
It also hits 83 mph in standart trim which is not very useful.

I went for a 16 front and 39 rear but the only other option I could find was a 37 from an RGV wich should need some adaption.
Also the GN has a 16" rear wheel wich is net very good for tire availability but the last one I had fitted really helped gear reduction ratio (much taller)

Any way good one and they're very light too !
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Old 08-05-2012, 04:24 PM   #15 (permalink)
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Anything went wrong with the SRX ?

Can you tell me the bore and stroke of your TU-X ?
(just to see if I could usefully swap stuff on the GN)
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Old 08-05-2012, 08:23 PM   #16 (permalink)
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The SRX is fine. I did replace the battery and it runs better. Maybe the charging system is not working as hard trying to keep the old battery charged. The electrolyte was down almost 75% in one cell. The rest were low but not quite that low.

I rode both the SRX and the 1971 CB350 this weekend and gave the TU a rest. I think the stroke is 62 MM on the TU. The bike had the 15 tooth drive sprocket replaced with a 16 tooth by the PO. This week I'll try for 90 MPG on my weekday rides, just a little more conservative with the throttle and gears.

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Mech
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Old 08-05-2012, 11:18 PM   #17 (permalink)
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According to the TU's shop manual the exact bore and stroke is 72 x 61.2.
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Old 08-10-2012, 09:09 AM   #18 (permalink)
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Quote:
Originally Posted by woodsrat View Post
According to the TU's shop manual the exact bore and stroke is 72 x 61.2.
Ok, so it is 2 valver version of the GN, that's interesting.

Last edited by renault_megane_dci; 08-10-2012 at 03:28 PM..
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Old 08-10-2012, 01:42 PM   #19 (permalink)
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90.84 MPG. 215.3 miles on 2.37 gallons, $8.32. I checked the valve lash by checking the exhaust valve. Max spec was .005. The .005 blade was tight, .004 was easy, so it is exactly in specs. The low fuel light came on at 207.4 miles. This is my daily route of 40 miles with a total of 46 traffic lights. I average between 36-38 MPH. It takes about 5 minutes to check the exhaust valve and that valve is the one that loses it's lash more quickly than the intake. Also checked the air filter, which is a foam type and can be cleaned and reused.

Until I can get my 3 wheeler, 2 passenger, prototype built this bike will get me about the same mileage I am hoping for in the prototype. This bike is the best mileage vehicle I have ever used for my local route, of any vehicle I have owned. At $2300 purchase price it is less than 65% of the cost, compared to the depreciation on the Insight over 32k miles, which was $3500. The Insight would average just under 70 MPG for the same drive.

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Mech
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Old 08-27-2012, 01:36 PM   #20 (permalink)
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97.38 MPG last tank!

I changed the oil, used castrol synthetic 4 stroke motorcycle oil. Mostly same route of 40 miles round trip with 46 traffic lights. Almost 3800 miles on the bike now, I guess it is still breaking in. Maybe I can sneak it over 100 before the weather cools off with fall approaching. What is even better to know is this fuel injected bike with 02 sensor and cat is putting out very little pollution. 228.3 miles before the low fuel level warning lamp came on constantly, on 2.33 gallons! Did I say I love this bike!!!!

regards
Mech

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