Real Numbers on 1500


Technical information and Q&A applicable to all years and models of Goldwings
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WVJefo
Posts: 55
Joined: Mon Jul 23, 2012 2:01 pm
Location: Columbus, Ohio
Motorcycle: 1985 GL1200 Aspencade "The 12"
1994 1500 Aspencade "The Black

Real Numbers on 1500

Postby WVJefo » Thu Aug 21, 2014 2:57 pm



Everyone has seen the quarter mile, horsepower & torque figures for the 1500. 100 horses at 5200 rpm 110 torque at 4000 rpm 13.8 sec in 1/4 at 94 mph. From a perfect engine at the factory. Of course the HP and Torque numbers are from the crank. NOT all the Horses and torque gets to the rear wheels. Remember that horsepower is speed, Torque is acceration. All the horses in the world will not move without torque. Sucky torque sucky 1/4 mile times.

Got my Black dyno'd last night. 1994 GL1500 Aspencade with 31000 miles. THESE are the numbers that actually count NUMBERS AT THE REAR WHEEL of a twenty year old bike.

Max Torque 79 at about 4000 RPM BUT an average of 74 across the entire rev. That is why Goldwings pull like at train. Lots of torque all across the rpm range
Max HP 68 at 5100 (It was still rising but the machine graph ended at 5100 RPM) The bike does red line at 5500.

1/4 mile 13.1 sec 98 mph. Just a little better than advertised.

by the way Black seemed to like the fun. She seemed a happier on the way home.
Jeff



Dogsled
Posts: 741
Joined: Tue Dec 13, 2011 4:27 pm
Location: Boardman, OH
Motorcycle: 1997 Goldwing

Re: Real Numbers on 1500

Postby Dogsled » Thu Aug 21, 2014 7:59 pm

Interesting tests. Thanks for sharing the results. Now your next post should tell us what you are going to do toincrease over-all performance..... :lol:
"Fight until hell freezes over, then fight on the ice"

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WVJefo
Posts: 55
Joined: Mon Jul 23, 2012 2:01 pm
Location: Columbus, Ohio
Motorcycle: 1985 GL1200 Aspencade "The 12"
1994 1500 Aspencade "The Black

Re: Real Numbers on 1500

Postby WVJefo » Thu Aug 21, 2014 9:25 pm

Nothing. I like just as it is. But rear end is getting the moly 60 treatment this winter.

Jeff

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HawkeyeGL1200
Posts: 918
Joined: Sat Jul 05, 2014 11:53 am
Location: Courtland, Va.
Motorcycle: 1984 GL1200 Interstate
1981 GL1100 Interstate

Re: Real Numbers on 1500

Postby HawkeyeGL1200 » Fri Aug 22, 2014 7:49 am

I met a guy (last summer) who owned a Valkyrie Interstate. I can't remember the year. I struck up a conversation with him because he had a car tire on the back rim, and I wanted an honest opinion about the performance of the car tire. He had just got back to Virginia from a trip to Florida (I'm telling it how he told me) for some work he had lined up in Florida. His Valkyrie had about 94,000 miles on it and he took it to a shop to get timing belts changed and some other work. I can't recall exactly what was done. He told me the shop had a dynomometer and after getting the work done, they dyno'd the bike. If I recall correctly, he said it was "about" 95 HP and 95 ft/lbs torque.

The reason I am repeating what he told me here is, I'm wondering if it is possible that a Valkyrie with 6 carbs can have that much better performance than a GL1500 set up? I have always liked the look of the Valkyrie, and figure I'll own one sooner or later, but if they performa that much better than a "regluar" 1500, it is definitely going to be sooner than later...
I am wrong as often as I am right concerning what is wrong with someone else' motorcycle without having seen the machine in person. Guessing with limited information, as to the source of the trouble, is sketchy at best.

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WVJefo
Posts: 55
Joined: Mon Jul 23, 2012 2:01 pm
Location: Columbus, Ohio
Motorcycle: 1985 GL1200 Aspencade "The 12"
1994 1500 Aspencade "The Black

Re: Real Numbers on 1500

Postby WVJefo » Fri Aug 22, 2014 10:06 am

Better intake & exhaust alone can add a lot of power. It is the easiest and cheapest method. That is why headers and special intakes are so popular on Detroit V8's.

Jeff

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redial
Posts: 1993
Joined: Mon Jan 03, 2011 1:17 am
Location: Kapunda, SouthAustralia
Motorcycle: 1997 GL1500 Spectre Red Aspencade

Re: Real Numbers on 1500

Postby redial » Fri Aug 22, 2014 9:20 pm

I have not done it, (too old for those thrills :o ), but my 88 has been upto the factory stated top speed. It was done in OK, so I guess there were plenty of straight roads to achieve this speed.


Len in Kapunda

The world is not going to finish today, as it is already tomorrow in Australia and New Zealand, and other islands of foreign nations such as Guam and Samoa.


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